Pipe-fitting.



W. SCHRADIN.

PIPE FITTING.

APPLICATION FILED FEB. 14. 19 14.

Patented June 6, 1916.

.lhlllllllillii IN l/EN TOR assembled.

UNITED STATES PATENT OFFICE.

WILLIAM SCHRADIN, OF NEW YORK, N. Y., ASSIG-NOR 0F ONE-THIRD TO SAID WILLIAM SCHRADIN, ONE-THIRD TO J. W. JOHNSON, OF NEW YORK, N. Y., AND ONE-THIRD TO TIMOTHY HOPKIN, 0F YONKERS, NEW YORK.

PIPE-FITTING.

Specification of Letters Patent.

Patented June 6, 1916.

Application filed February 14, 1914. Seriallio. 818,634.

To all whom it may concern:

Be it known that I, WILLIAM SGHRADIN, a citizen of the United States, residing in the borough of Bronx, city, county, and State of New York, have invented an Improvement in Pipe-Fittings, of which the following is a specification.

My present invention relates to pipe fittings and particularly to waste or soil pipe fittings.

Heretofore in building construction, much difficulty has been experienced in testingpipe lines irrespective of whether the same were made of ordinary cast iron adapted to have calked joints, or whether made of wrought iron having screw threaded joints. This is due to the unreliability of the expansion plugs ordinarily used to stop thepipe line when making tests, inasmuch as these expansion plugs are likely to loosen and give way as they frequently do, thereby making the test a failure.

Now the object of my invention is to overcome this diificulty and provide a pipe fitting reinforced ,in a predetermined portion and tapped to receive an ordinary pipe plug which cannot break away, so that in the use of fittings made in accordance with my present invention, there is no liability of a test bein a failure because of the plug becoming oose or breaking away.

In the drawing, Figure l is an elevation and partial longitudinal cross section illustrating a pipe fitting made in accordance with my present invention. Fig. 2 is a similar "view illustrating my invention as applied to a U or trap fitting. Fig. 3 is also a similar View showing the invention applied to a tapping-in T fitting, and Fig. 4 is a view similar to Fig. 1, showing a plug in position in the pipe.

Referring to the drawings, and particularly to Fig. 1, 1O designates the body portion of a pipe fitting which, as in this illustration, may be an ordinary straight pipe provided at opposite ends with flanges 11 and 12, and at one end with an opening 13 of suiiieiently larger diameter than that of the pipe, to receive the opposite end of the next adjacent pipe when the fittings are Adjacent one end of .this straight pipe 10, the same is reinforced or enlarged or more metal is employed in the body thereof as indicated at 14, and this relnforced portion 14 is tapped so as to be provided with a standard screw thread 15, the tap being so made that the diameter thereof is substantially that of the inside diameter of the pipe. The tap portion of the p1p e 15 is adapted .to receive an ordinary plpe plug 16, as indicated in Fig. 4 when the pipe line has been constructed and is to betested for leaks in its joints.

7 Referring to Fig. 2, the invention may be applied to a U or tra fitting wherein the bend or U portion of t e pipe is indicated at 17 the inlet and outlet connections respectively at 18 and 19, while the hand holes extensions are indicated at 20 21. In this form of the invention, the reinforced portion of the body of the pipe is preferably at one side of the inlet or outlet connections, and as indicated in the drawing, on the under side of the outlet connection 19. This reinforced portion is indicated at 22 and is tapped to be provided with a standard screw thread, as indicated at 23. The bore or diameter of the hand hole connection 21 in this form of fitting, is. made sufficiently large to permit an ordinary standard pipe plug to be passed therethrough and turned down into the tappedportion 23 to securely shut off the pipe when making tests.

As indicated in Fig. 3, the invention may also be employed to a tapping-in T. This pipe is provided as is customary in such structures, with a hand hole 24 and at one end thereof the body portion is reinforced as indicated at 25, and the tap provided with a standard screw thread 26. In the use of this structure, as will be understood, the diameter of the hand hole 2 1 is sufliciently large to permit the pipe plug to be passed therethrough and turned down into the tapped portion 26 tocompletely and securely close the pipe line for testing purposes.

It will be further understood that while I have only shown and described three forms of pipe fittings, my invention is equally ap plicable to any and all forms of such fittings,

and also to drainage fittings of cast, wrought or other metal, irrespective of whether the same are made of calked or screw thread joints.

I claim as my invention:

A pipe fitting comprising a main portion of uniform exterior and interior dimensions, and a joint portion of uniformly larger exterior dimensions than the exterior of said Signed by me this 26th day of January, main portion, the inner end of said joint 1914.

portion being screw threaded and of the same interior dimensions as said main por- WILLIAM SOHRADIN' 5 tion, While the outer end of said joint por- Witnesses:

tion is of uniformly larger interior dimen- BERTHA M. ALLEN,

sions than said main portion. MARIE D. Wommzs. 

